html, body { margin: 0; height: 100%; background: #101215; color: #eee; font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial; }
canvas { display: block; }

#overlay { position: fixed; inset: 0; display: grid; place-content: center; text-align: center; gap: 10px; pointer-events: none; }
#title { font-size: 28px; opacity: 0.9; }
#hint { font-size: 14px; opacity: 0.7; }

#ui { position: fixed; inset: 0; pointer-events: none; }
#crosshair { position: absolute; left: 50%; top: 50%; width: 24px; height: 24px; transform: translate(-50%, -50%); opacity: 0.8; }
#crosshair > div { position: absolute; left: 50%; top: 50%; width: 2px; height: 24px; background: #fff; transform: translate(-50%, -50%); }
#crosshair > div::after { content: ""; position: absolute; width: 24px; height: 2px; left: 50%; top: 50%; transform: translate(-50%, -50%); background: #fff; }

#hotbar { position: absolute; left: 50%; bottom: 24px; transform: translateX(-50%); display: flex; gap: 8px; padding: 8px; background: rgba(0,0,0,0.35); border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; backdrop-filter: blur(6px); }
.hot { width: 44px; height: 44px; border-radius: 6px; border: 2px solid rgba(255,255,255,0.15); background: rgba(30,30,30,0.6); display: grid; place-items: center; position: relative; }
.hot.selected { border-color: #fff; box-shadow: 0 0 0 2px #fff6 inset; }
.hot .count { position: absolute; right: 4px; bottom: 2px; font-size: 12px; text-shadow: 0 1px 0 #000; }
.hot .icon { width: 30px; height: 30px; image-rendering: pixelated; background-image: url('assets/atlas.png'); background-size: 256px 256px; border-radius: 3px; }

#health { position: absolute; left: 24px; bottom: 24px; display: flex; gap: 4px; }
.heart { width: 18px; height: 18px; background: radial-gradient(circle at 30% 30%, #f55 0 40%, transparent 41%), radial-gradient(circle at 70% 30%, #f55 0 40%, transparent 41%), linear-gradient(#f55 0 50%, transparent 50%); filter: drop-shadow(0 0 2px #000); transform: rotate(45deg); }
.heart.empty { opacity: 0.2; }

#debug { position: absolute; left: 12px; top: 12px; font: 12px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: #c9d1d9; background: rgba(0,0,0,0.35); padding: 6px 8px; border-radius: 6px; }